Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Why Is My Cat Sneezing All of a Sudden? 6 Vet-Reviewed Reasons

Share

tabby cat sneezing

Has your beloved feline friend suddenly started sneezing as if there’s no tomorrow? Cats sneeze for various reasons. Your kitty could have gotten wind of something that is disrupting their delicate sense of smell, or they are allergic to something in their environment. Either way, intermittent sneezes are typically not a major cause for concern unless your pet also starts avoiding food, losing weight, or becoming lethargic.

While benign nasal polyps or a malignant tumor could be underlying causes of spontaneous sneezes, keep reading to discover six common reasons that your cat might be sneezing all of a sudden.

divider cat faces 2 oct 2024

The 6 Possible Reasons Your Cat Is Sneezing All of a Sudden

1. Upper Respiratory Viral Infections

Cat sneezes
Photo Credit: ZlataMarka, Shutterstock

Cats, just like people, can suffer from upper respiratory viral infections. Cats that have recently been adopted from shelters or have been hospitalized and exposed to other cats are particularly susceptible to these infections. The most common culprits include feline herpes virus and feline calicivirus, both of which cause kitties to get stuffy and sneeze.

As a general rule, there’s not much you can do to “cure” a feline upper respiratory viral infection. Your companion’s body will need to do the work; it’s no different from the misery that ensues when you catch a cold and have to deal with a clogged nose and scratchy throat until your body gets into gear and takes care of business. Vaccinating your pet is the best way to prevent respiratory illnesses from developing.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

Preventative wellness PGV mention keep cat healthy Preventative wellness PGV mention keep cat healthy mobile

2. Bacterial Infections

Bacteria can also cause sneezing, nasal discharge, and watery eyes associated with upper respiratory infections. In fact, it’s pretty common for upper respiratory infections to start as common viral issues and then progress into bacterial infections as your cat’s nasal and sinus passages become inflamed. Bacterial infections are often accompanied by fever and may require systemic antibiotics to resolve.

Bacterial dental infections are a common cause of sneezing in cats. Cats with serious dental issues often suffer inflammation that extends into the nasal and sinus cavities, causing sneezing and other signs that often resemble upper respiratory infections.


3. Allergies & Irritants

cat smelling a sunflower
Photo Credit: scarlett1991, Pixabay

Just like humans, cats often sneeze when exposed to substances that irritate delicate nasal and sinus membranes like smoke, perfume, and mold. But some kitties have specific allergies. Cats can be allergic to a particular food or pollen or even something in their cat litter.

Keep in mind, however, that cats are far less likely to sneeze in reaction to allergens than humans. Cats suffering from allergies will typically spend time scratching and licking as well. Kitties with food allergies are notorious for removing large swaths of fur from their abdominal area and back while attempting to relieve the pruritus (itchy feeling) associated with a food allergy.


4. Nasal & Sinus Issues

Your cat can suffer from rhinitis and sinusitis, which are conditions in which the lining of the nasal passages and sinuses end up irritated and inflamed. These often occur as a result of an upper respiratory infection. Common signs include difficulty breathing, snoring, and ocular discharge. Treatment is usually straightforward and often involves basic supportive care, such as nasal washes, antibiotics (or antifungals, depending on what is determined to be the cause), and occasionally, decongestants.


5. Chronic Upper Respiratory Infections

a ginger cat sneezes
Photo Credit: Ihtar, Pixabay

If your cat has repeated sinus infections or upper respiratory illnesses, they can have chronic upper respiratory issues. The signs are often the same as what you see with viral and bacterial infections like rhinitis and sinusitis. Most veterinarians consider a cat’s upper respiratory illness chronic when it lasts for a few months or regularly comes back after treatment. Advanced diagnostics may be needed to isolate the specific pathogen and determine if a longer course or change in antimicrobial is needed to combat the illness, should signs last more than a few weeks.

Cats infected with viruses, such as feline herpes virus, often have relapses, particularly when stressed, so it is best practice to keep them as calm and comfortable as possible at home.


6. Foreign Bodies

Because cats understand the world largely through their sense of smell, they can sometimes get objects stuck in their noses after taking a sniff of a novel plant, person, or object. Blades of grass and other plant matter are usually the biggest culprits. Kitties are generally able to get rid of things like the occasional grass clipping or bits of pollen naturally.

If your cat doesn’t seem to get any relief and the foreign object seems stuck, contact your veterinarian for help. Home remedies can often do more harm than good in these situations. Treatment often requires light sedation to permit the irrigation of your pet’s nasal passages or the removal of the offending object with forceps (possibly with the aid of rhinoscopy). Your veterinarian may prescribe antibiotics to prevent infection and medication to soothe your cat’s irritated nasal passages.

divider cat faces 2 oct 2024

Final Thoughts

Cats can sneeze for a variety of reasons, including allergies and infection. Either way, it’s good to know that cat sneezes aren’t usually a cause for concern as long as your cat’s nose isn’t producing thick yellow or bloody mucus. It’s best to contact your companion’s veterinarian if your cat’s condition doesn’t improve in 1–3 days or if you suspect that your four-footed friend has a foreign object stuck in their nose. Remember that early intervention of a suspected upper respiratory infection is often the best way to prevent it from becoming a larger problem down the road.

Related Reads: 


Featured Image Credit By: Jupiter_79, Pixabay

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Celebrating 15 Years as the Most Popular Resident of No. 10 Downing Street

For almost 300 years, a rather unassuming Georgian building of black bricks with a shiny black door has been the official residence and...

Ask Dr. Paola – Help! My Kitten Pukes After She Eats! (March 2, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

You’re Probably Feeding Your Cat Wrong (Here’s How to Fix It)

Many cat parents pour kibble into their cat’s bowl whenever it looks empty, maybe top off the water, and call it a day....

Catalyst Pet Litter Review: Our Expert’s Opinion 2026

So, you want a cat litter that clumps like clay and absorbs odor like silica, but is more eco-friendly and better accepted by...

More related

Can Cats Eat Soy? Vet-Approved Nutritional Facts & FAQ

Whether you’re a fan or not, soy products like milk, yogurt, and tofu are nutritious alternatives to dairy and other animal proteins. On...

What’s the Price of an Ultrasound for a Cat? 2026 Guide

Veterinary care can be expensive. Whether your cat needs an ultrasound for reasons related to pregnancy or a medical condition, there can be...

Kitty Horoscope: October Belongs to the Lovely Libra Cat

Astrological signs can tell us a lot about ourselves and how we function in the world. But does it just stop with people?...

10 Best Cat Trees for Multiple Cats in 2026 – Reviews & Top Picks

Cat trees are a wonderful addition to any toy collection for cats. They provide exercise and mental stimulation, as well as a good...

Keep reading

Can Cats Eat Chia Seeds? Vet-Approved Nutrition Facts & FAQ

Chia seeds are most associated with those tasty chia puddings that you see all over social media. Maybe you haven’t thought about giving them to your fur baby, but some cat parents wonder if their pet might benefit from a...

Can Cats Eat Chia Seeds

Why Is My Cat Meowing a Lot Suddenly? 6 Vet-Reviewed Reasons

Cats can be very vocal creatures! Sometimes, the reason why your cat is being so vocal is because they’re simply letting you know they need something, or perhaps they just like to hear themselves talk. A few breeds are anecdotally...

british-shorthair-cat-meowing

10 Best Chew Toys For Cats in 2026 – Reviews & Top Picks

Dog owners are painfully aware of their pet’s need for safe chew toys, frequently at the expense of their shoes. However, cat owners might not know that their kitties also benefit from chewing on toys. Teething kittens need relief just...

Hepper Catnip Stick Toy - White Cornish Rex on Bed

Do Deaf Cats Tend to Be More Affectionate? What You Need to Know!

If you are thinking of adopting a cat, do not overlook cats that are deaf. Some people shy away from felines with disabilities because they imagine taking care of them will be more difficult, or perhaps the cat will be...

white-scottish-straight-longhair-cat

Does Palmolive Kill Fleas on Cats? Vet Reviewed Effectiveness & Safety Explored

Fleas are the bane of every pet owner’s existence. They’re not only a nuisance for you, but they can cause itching and discomfort for your cat. Worse yet, fleas can carry diseases that can be serious. If your cat gets...

tabby cat taking a bath

What’s the Price of Cat & Kitten Vaccinations in Australia? (Costs in 2026)

Whether you have an indoor or outdoor feline, you must keep up with their vaccinations. Vaccinations and booster shots keep numerous preventable health concerns at bay. But how much do cat and kitten vaccinations cost in Australia? We gathered the...

Kitten_Vaccine

7 Health Benefits of Catnip for Cats – Based on Science

Most of us cat parents know that many cats have a weakness for catnip. So, while we might want to select a catnip-filled toy, are there actually any health benefits to allowing your cat to have catnip? The good news...

cat with green eyes in catnip

When Can Kittens Eat Solid Food? Vet-Approved Facts & FAQ

Adopting a kitten is a wholesome moment, but it comes with many responsibilities. While their sleeping requirements are usually easier to manage, their nutritional needs require extra effort and care. Considering how fast felines grow, you must act fast to...

When Can Kittens Eat Solid Food

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.